Finding the Fourth Proportional to 100,890.58, 139,226.96 and 63,185.62
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Solution
The fourth proportional to 100,890.58, 139,226.96 and 63,185.62 is: 87,194.88
Step by Step Solution
- Step 1: Write the proportion equation
100,890.58 : 139,226.96 = 63,185.62 : x - Step 2: Convert to fraction form
100,890.58/139,226.96 = 63,185.62/x - Step 3: Cross multiply
100,890.58x = 139,226.96 × 63,185.62 - Step 4: Simplify right side
100,890.58x = 8,797,141,788.32 - Step 5: Solve for x
x = 8,797,141,788.32/100,890.58 - Step 6: Final answer
x = 87,194.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.